Every time I am on the Junk Run (thumper) mission with Kahl, towards the end when using the Hellion pack to reach the turrets from the front I am warped into the turret and stuck. Unstuck commands do nothing. This is apparently not a one off instance as again it has happened every time I go to replay the the mission to actually finish it.
The bug occurs regardless of how I land, so long as it is on the platform near to the turret. as far as I can tell, nothing seems to be able to rescue Kahl.